Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 482 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/JSGlobalObject.cpp b/Source/JavaScriptCore/runtime/JSGlobalObject.cpp
new file mode 100644
index 000000000..5ad53c222
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/JSGlobalObject.cpp
@@ -0,0 +1,482 @@
+/*
+ * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "JSGlobalObject.h"
+
+#include "JSCallbackConstructor.h"
+#include "JSCallbackFunction.h"
+#include "JSCallbackObject.h"
+
+#include "Arguments.h"
+#include "ArrayConstructor.h"
+#include "ArrayPrototype.h"
+#include "BooleanConstructor.h"
+#include "BooleanPrototype.h"
+#include "CodeBlock.h"
+#include "DateConstructor.h"
+#include "DatePrototype.h"
+#include "Error.h"
+#include "ErrorConstructor.h"
+#include "ErrorPrototype.h"
+#include "FunctionConstructor.h"
+#include "FunctionPrototype.h"
+#include "GetterSetter.h"
+#include "JSBoundFunction.h"
+#include "JSFunction.h"
+#include "JSGlobalObjectFunctions.h"
+#include "JSLock.h"
+#include "JSONObject.h"
+#include "Interpreter.h"
+#include "Lookup.h"
+#include "MathObject.h"
+#include "NativeErrorConstructor.h"
+#include "NativeErrorPrototype.h"
+#include "NumberConstructor.h"
+#include "NumberPrototype.h"
+#include "ObjectConstructor.h"
+#include "ObjectPrototype.h"
+#include "Profiler.h"
+#include "RegExpConstructor.h"
+#include "RegExpMatchesArray.h"
+#include "RegExpObject.h"
+#include "RegExpPrototype.h"
+#include "ScopeChainMark.h"
+#include "StringConstructor.h"
+#include "StringPrototype.h"
+#include "Debugger.h"
+
+#include "JSGlobalObject.lut.h"
+
+namespace JSC {
+
+const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &JSVariableObject::s_info, 0, ExecState::globalObjectTable, CREATE_METHOD_TABLE(JSGlobalObject) };
+
+const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = { &supportsProfiling, &supportsRichSourceInfo, &shouldInterruptScript };
+
+/* Source for JSGlobalObject.lut.h
+@begin globalObjectTable
+  parseInt              globalFuncParseInt              DontEnum|Function 2
+  parseFloat            globalFuncParseFloat            DontEnum|Function 1
+  isNaN                 globalFuncIsNaN                 DontEnum|Function 1
+  isFinite              globalFuncIsFinite              DontEnum|Function 1
+  escape                globalFuncEscape                DontEnum|Function 1
+  unescape              globalFuncUnescape              DontEnum|Function 1
+  decodeURI             globalFuncDecodeURI             DontEnum|Function 1
+  decodeURIComponent    globalFuncDecodeURIComponent    DontEnum|Function 1
+  encodeURI             globalFuncEncodeURI             DontEnum|Function 1
+  encodeURIComponent    globalFuncEncodeURIComponent    DontEnum|Function 1
+@end
+*/
+
+ASSERT_CLASS_FITS_IN_CELL(JSGlobalObject);
+
+// Default number of ticks before a timeout check should be done.
+static const int initialTickCountThreshold = 255;
+
+// Preferred number of milliseconds between each timeout check
+static const int preferredScriptCheckTimeInterval = 1000;
+
+template <typename T> static inline void visitIfNeeded(SlotVisitor& visitor, WriteBarrier<T>* v)
+{
+    if (*v)
+        visitor.append(v);
+}
+
+JSGlobalObject::~JSGlobalObject()
+{
+    ASSERT(JSLock::currentThreadIsHoldingLock());
+
+    if (m_debugger)
+        m_debugger->detach(this);
+
+    Profiler** profiler = Profiler::enabledProfilerReference();
+    if (UNLIKELY(*profiler != 0)) {
+        (*profiler)->stopProfiling(this);
+    }
+}
+
+void JSGlobalObject::destroy(JSCell* cell)
+{
+    jsCast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
+}
+
+void JSGlobalObject::init(JSObject* thisValue)
+{
+    ASSERT(JSLock::currentThreadIsHoldingLock());
+    
+    structure()->disableSpecificFunctionTracking();
+
+    m_globalData = Heap::heap(this)->globalData();
+    m_globalScopeChain.set(*m_globalData, this, ScopeChainNode::create(0, this, m_globalData.get(), this, thisValue));
+
+    JSGlobalObject::globalExec()->init(0, 0, m_globalScopeChain.get(), CallFrame::noCaller(), 0, 0);
+
+    m_debugger = 0;
+
+    reset(prototype());
+}
+
+void JSGlobalObject::put(JSCell* cell, ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
+
+    if (thisObject->symbolTablePut(exec, propertyName, value, slot.isStrictMode()))
+        return;
+    JSVariableObject::put(thisObject, exec, propertyName, value, slot);
+}
+
+void JSGlobalObject::putWithAttributes(JSObject* object, ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
+
+    if (thisObject->symbolTablePutWithAttributes(exec->globalData(), propertyName, value, attributes))
+        return;
+
+    JSValue valueBefore = thisObject->getDirect(exec->globalData(), propertyName);
+    PutPropertySlot slot;
+    JSVariableObject::put(thisObject, exec, propertyName, value, slot);
+    if (!valueBefore) {
+        JSValue valueAfter = thisObject->getDirect(exec->globalData(), propertyName);
+        if (valueAfter)
+            JSObject::putWithAttributes(thisObject, exec, propertyName, valueAfter, attributes);
+    }
+}
+
+void JSGlobalObject::defineGetter(JSObject* object, ExecState* exec, const Identifier& propertyName, JSObject* getterFunc, unsigned attributes)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    PropertySlot slot;
+    if (!thisObject->symbolTableGet(propertyName, slot))
+        JSVariableObject::defineGetter(thisObject, exec, propertyName, getterFunc, attributes);
+}
+
+void JSGlobalObject::defineSetter(JSObject* object, ExecState* exec, const Identifier& propertyName, JSObject* setterFunc, unsigned attributes)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    PropertySlot slot;
+    if (!thisObject->symbolTableGet(propertyName, slot))
+        JSVariableObject::defineSetter(thisObject, exec, propertyName, setterFunc, attributes);
+}
+
+static inline JSObject* lastInPrototypeChain(JSObject* object)
+{
+    JSObject* o = object;
+    while (o->prototype().isObject())
+        o = asObject(o->prototype());
+    return o;
+}
+
+void JSGlobalObject::reset(JSValue prototype)
+{
+    ExecState* exec = JSGlobalObject::globalExec();
+
+    m_functionPrototype.set(exec->globalData(), this, FunctionPrototype::create(exec, this, FunctionPrototype::createStructure(exec->globalData(), this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
+    m_functionStructure.set(exec->globalData(), this, JSFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_boundFunctionStructure.set(exec->globalData(), this, JSBoundFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_namedFunctionStructure.set(exec->globalData(), this, Structure::addPropertyTransition(exec->globalData(), m_functionStructure.get(), exec->globalData().propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset));
+    m_internalFunctionStructure.set(exec->globalData(), this, InternalFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    JSFunction* callFunction = 0;
+    JSFunction* applyFunction = 0;
+    m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction);
+    m_callFunction.set(exec->globalData(), this, callFunction);
+    m_applyFunction.set(exec->globalData(), this, applyFunction);
+    m_objectPrototype.set(exec->globalData(), this, ObjectPrototype::create(exec, this, ObjectPrototype::createStructure(exec->globalData(), this, jsNull())));
+    m_functionPrototype->structure()->setPrototypeWithoutTransition(exec->globalData(), m_objectPrototype.get());
+
+    m_emptyObjectStructure.set(exec->globalData(), this, m_objectPrototype->inheritorID(exec->globalData()));
+    m_nullPrototypeObjectStructure.set(exec->globalData(), this, createEmptyObjectStructure(exec->globalData(), this, jsNull()));
+
+    m_callbackFunctionStructure.set(exec->globalData(), this, JSCallbackFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_argumentsStructure.set(exec->globalData(), this, Arguments::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_callbackConstructorStructure.set(exec->globalData(), this, JSCallbackConstructor::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_callbackObjectStructure.set(exec->globalData(), this, JSCallbackObject<JSNonFinalObject>::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+
+    m_arrayPrototype.set(exec->globalData(), this, ArrayPrototype::create(exec, this, ArrayPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_arrayStructure.set(exec->globalData(), this, JSArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
+    m_regExpMatchesArrayStructure.set(exec->globalData(), this, RegExpMatchesArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
+
+    m_stringPrototype.set(exec->globalData(), this, StringPrototype::create(exec, this, StringPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_stringObjectStructure.set(exec->globalData(), this, StringObject::createStructure(exec->globalData(), this, m_stringPrototype.get()));
+
+    m_booleanPrototype.set(exec->globalData(), this, BooleanPrototype::create(exec, this, BooleanPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_booleanObjectStructure.set(exec->globalData(), this, BooleanObject::createStructure(exec->globalData(), this, m_booleanPrototype.get()));
+
+    m_numberPrototype.set(exec->globalData(), this, NumberPrototype::create(exec, this, NumberPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_numberObjectStructure.set(exec->globalData(), this, NumberObject::createStructure(exec->globalData(), this, m_numberPrototype.get()));
+
+    m_datePrototype.set(exec->globalData(), this, DatePrototype::create(exec, this, DatePrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_dateStructure.set(exec->globalData(), this, DateInstance::createStructure(exec->globalData(), this, m_datePrototype.get()));
+
+    RegExp* emptyRegex = RegExp::create(exec->globalData(), "", NoFlags);
+    
+    m_regExpPrototype.set(exec->globalData(), this, RegExpPrototype::create(exec, this, RegExpPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()), emptyRegex));
+    m_regExpStructure.set(exec->globalData(), this, RegExpObject::createStructure(exec->globalData(), this, m_regExpPrototype.get()));
+
+    m_methodCallDummy.set(exec->globalData(), this, constructEmptyObject(exec));
+
+    ErrorPrototype* errorPrototype = ErrorPrototype::create(exec, this, ErrorPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_errorStructure.set(exec->globalData(), this, ErrorInstance::createStructure(exec->globalData(), this, errorPrototype));
+
+    // Constructors
+
+    JSCell* objectConstructor = ObjectConstructor::create(exec, this, ObjectConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_objectPrototype.get());
+    JSCell* functionConstructor = FunctionConstructor::create(exec, this, FunctionConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_functionPrototype.get());
+    JSCell* arrayConstructor = ArrayConstructor::create(exec, this, ArrayConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_arrayPrototype.get());
+    JSCell* stringConstructor = StringConstructor::create(exec, this, StringConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_stringPrototype.get());
+    JSCell* booleanConstructor = BooleanConstructor::create(exec, this, BooleanConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_booleanPrototype.get());
+    JSCell* numberConstructor = NumberConstructor::create(exec, this, NumberConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_numberPrototype.get());
+    JSCell* dateConstructor = DateConstructor::create(exec, this, DateConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_datePrototype.get());
+
+    m_regExpConstructor.set(exec->globalData(), this, RegExpConstructor::create(exec, this, RegExpConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_regExpPrototype.get()));
+
+    m_errorConstructor.set(exec->globalData(), this, ErrorConstructor::create(exec, this, ErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), errorPrototype));
+
+    Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->globalData(), this, errorPrototype);
+    Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get());
+    m_evalErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "EvalError"));
+    m_rangeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "RangeError"));
+    m_referenceErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "ReferenceError"));
+    m_syntaxErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "SyntaxError"));
+    m_typeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "TypeError"));
+    m_URIErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "URIError"));
+
+    m_objectPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, objectConstructor, DontEnum);
+    m_functionPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, functionConstructor, DontEnum);
+    m_arrayPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, arrayConstructor, DontEnum);
+    m_booleanPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, booleanConstructor, DontEnum);
+    m_stringPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, stringConstructor, DontEnum);
+    m_numberPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, numberConstructor, DontEnum);
+    m_datePrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, dateConstructor, DontEnum);
+    m_regExpPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum);
+    errorPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Object"), objectConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Function"), functionConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Array"), arrayConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "String"), stringConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Number"), numberConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Date"), dateConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "RegExp"), m_regExpConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Error"), m_errorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "EvalError"), m_evalErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "RangeError"), m_rangeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "ReferenceError"), m_referenceErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SyntaxError"), m_syntaxErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "TypeError"), m_typeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "URIError"), m_URIErrorConstructor.get(), DontEnum);
+
+    m_evalFunction.set(exec->globalData(), this, JSFunction::create(exec, this, 1, exec->propertyNames().eval, globalFuncEval));
+    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().eval, m_evalFunction.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "JSON"), JSONObject::create(exec, this, JSONObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum);
+
+    GlobalPropertyInfo staticGlobals[] = {
+        GlobalPropertyInfo(Identifier(exec, "Math"), MathObject::create(exec, this, MathObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum | DontDelete),
+        GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(), DontEnum | DontDelete | ReadOnly),
+        GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
+        GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete | ReadOnly)
+    };
+    addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
+
+    resetPrototype(exec->globalData(), prototype);
+}
+
+void JSGlobalObject::createThrowTypeError(ExecState* exec)
+{
+    JSFunction* thrower = JSFunction::create(exec, this, 0, Identifier(), globalFuncThrowTypeError);
+    GetterSetter* getterSetter = GetterSetter::create(exec);
+    getterSetter->setGetter(exec->globalData(), thrower);
+    getterSetter->setSetter(exec->globalData(), thrower);
+    m_throwTypeErrorGetterSetter.set(exec->globalData(), this, getterSetter);
+}
+
+// Set prototype, and also insert the object prototype at the end of the chain.
+void JSGlobalObject::resetPrototype(JSGlobalData& globalData, JSValue prototype)
+{
+    setPrototype(globalData, prototype);
+
+    JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
+    JSObject* objectPrototype = m_objectPrototype.get();
+    if (oldLastInPrototypeChain != objectPrototype)
+        oldLastInPrototypeChain->setPrototype(globalData, objectPrototype);
+}
+
+void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{ 
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
+    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
+    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
+    JSVariableObject::visitChildren(thisObject, visitor);
+
+    visitIfNeeded(visitor, &thisObject->m_globalScopeChain);
+    visitIfNeeded(visitor, &thisObject->m_methodCallDummy);
+
+    visitIfNeeded(visitor, &thisObject->m_regExpConstructor);
+    visitIfNeeded(visitor, &thisObject->m_errorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_evalErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_rangeErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_referenceErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_syntaxErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_typeErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_URIErrorConstructor);
+
+    visitIfNeeded(visitor, &thisObject->m_evalFunction);
+    visitIfNeeded(visitor, &thisObject->m_callFunction);
+    visitIfNeeded(visitor, &thisObject->m_applyFunction);
+    visitIfNeeded(visitor, &thisObject->m_throwTypeErrorGetterSetter);
+
+    visitIfNeeded(visitor, &thisObject->m_objectPrototype);
+    visitIfNeeded(visitor, &thisObject->m_functionPrototype);
+    visitIfNeeded(visitor, &thisObject->m_arrayPrototype);
+    visitIfNeeded(visitor, &thisObject->m_booleanPrototype);
+    visitIfNeeded(visitor, &thisObject->m_stringPrototype);
+    visitIfNeeded(visitor, &thisObject->m_numberPrototype);
+    visitIfNeeded(visitor, &thisObject->m_datePrototype);
+    visitIfNeeded(visitor, &thisObject->m_regExpPrototype);
+
+    visitIfNeeded(visitor, &thisObject->m_argumentsStructure);
+    visitIfNeeded(visitor, &thisObject->m_arrayStructure);
+    visitIfNeeded(visitor, &thisObject->m_booleanObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackConstructorStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_dateStructure);
+    visitIfNeeded(visitor, &thisObject->m_emptyObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_nullPrototypeObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_errorStructure);
+    visitIfNeeded(visitor, &thisObject->m_functionStructure);
+    visitIfNeeded(visitor, &thisObject->m_boundFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_namedFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_numberObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_regExpMatchesArrayStructure);
+    visitIfNeeded(visitor, &thisObject->m_regExpStructure);
+    visitIfNeeded(visitor, &thisObject->m_stringObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_internalFunctionStructure);
+
+    if (thisObject->m_registerArray) {
+        // Outside the execution of global code, when our variables are torn off,
+        // we can mark the torn-off array.
+        visitor.appendValues(thisObject->m_registerArray.get(), thisObject->m_registerArraySize);
+    } else if (thisObject->m_registers) {
+        // During execution of global code, when our variables are in the register file,
+        // the symbol table tells us how many variables there are, and registers
+        // points to where they end, and the registers used for execution begin.
+        visitor.appendValues(thisObject->m_registers - thisObject->symbolTable().size(), thisObject->symbolTable().size());
+    }
+}
+
+ExecState* JSGlobalObject::globalExec()
+{
+    return CallFrame::create(m_globalCallFrame + RegisterFile::CallFrameHeaderSize);
+}
+
+void JSGlobalObject::resizeRegisters(size_t newSize)
+{
+    // Previous duplicate symbols may have created spare capacity in m_registerArray.
+    if (newSize <= m_registerArraySize)
+        return;
+
+    size_t oldSize = m_registerArraySize;
+    OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[newSize]);
+    for (size_t i = 0; i < oldSize; ++i)
+        registerArray[i].set(globalData(), this, m_registerArray[i].get());
+    for (size_t i = oldSize; i < newSize; ++i)
+        registerArray[i].setUndefined();
+
+    WriteBarrier<Unknown>* registers = registerArray.get();
+    setRegisters(registers, registerArray.release(), newSize);
+}
+
+void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
+{
+    resizeRegisters(symbolTable().size() + count);
+
+    for (int i = 0; i < count; ++i) {
+        GlobalPropertyInfo& global = globals[i];
+        ASSERT(global.attributes & DontDelete);
+        
+        int index = symbolTable().size();
+        SymbolTableEntry newEntry(index, global.attributes);
+        symbolTable().add(global.identifier.impl(), newEntry);
+        registerAt(index).set(globalData(), this, global.value);
+    }
+}
+
+bool JSGlobalObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    if (getStaticFunctionSlot<JSVariableObject>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, slot))
+        return true;
+    return thisObject->symbolTableGet(propertyName, slot);
+}
+
+bool JSGlobalObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    if (getStaticFunctionDescriptor<JSVariableObject>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, descriptor))
+        return true;
+    return thisObject->symbolTableGet(propertyName, descriptor);
+}
+
+void JSGlobalObject::clearRareData(JSCell* cell)
+{
+    jsCast<JSGlobalObject*>(cell)->m_rareData.clear();
+}
+
+DynamicGlobalObjectScope::DynamicGlobalObjectScope(JSGlobalData& globalData, JSGlobalObject* dynamicGlobalObject)
+    : m_dynamicGlobalObjectSlot(globalData.dynamicGlobalObject)
+    , m_savedDynamicGlobalObject(m_dynamicGlobalObjectSlot)
+{
+    if (!m_dynamicGlobalObjectSlot) {
+#if ENABLE(ASSEMBLER)
+        if (ExecutableAllocator::underMemoryPressure())
+            globalData.recompileAllJSFunctions();
+#endif
+
+        m_dynamicGlobalObjectSlot = dynamicGlobalObject;
+
+        // Reset the date cache between JS invocations to force the VM
+        // to observe time zone changes.
+        globalData.resetDateCache();
+    }
+}
+
+void slowValidateCell(JSGlobalObject* globalObject)
+{
+    if (!globalObject->isGlobalObject())
+        CRASH();
+    ASSERT_GC_OBJECT_INHERITS(globalObject, &JSGlobalObject::s_info);
+}
+
+} // namespace JSC